Machine for molding plastic material into blocks or bodies.



B. v. EDWARDS. MACHINE FOR MOLDING PLASTIC MATERIAL INTO BLOCKS 0R BODIES.

APPLICATION FILED JAN. 4. l9l5- RENEWED APR..9, I9I8.

1 271,552. Patented July 9, 1918.

9 SHEEIS-SHEET I.

wue/wtoz w: mmms PETERS cu PNOID-LITHLL. WASHINI'; mu. 1:. 1:.

B. V. EDWARDS.

MACHINE FOR MOLDING PLASTIC MATERIAL INTO BLOCKS 0R BODIES.

APPLICATION FILED JAN. 4. I915. RENEWED APR. 9. 191a.

1 ,27 1 5 52, Patented July 9, 1918.

x I 9 SHEETSSHEET law We 13% s Nunms PETERS 00..Plmm|.|1uu..wAsumaruN. n. c.

B. v. EDWARDS. MACHINE FOR MOLDING PLASTIC MATERIAL INTO BLOCKS 0R BODIES.

APPLICATION FILED JAN- 4,1915- RENEWED APR- 9, I9I8.

1,271,552. Patented July 9, 1918.

9 SHEETS-SHEET 3.

I I I QT B. V. EDWARDS. MACHINE FOR MOLDING PLASTICMATERIAL INTO BLOCKS ORBODIES.

APPL IDATION FILED JAN- 4, I915- RENEWED APR. 9, 1918.

Patented July 9, 1918 9 SHEETS-SHEET 4.

B. V. EDWARDS.

MACHINE FOR MOLDING PLASTIC MATERIAL INTO BLOCKS OR BODIES.

APPLIIJATION FILED JAN-4,1915- RENEWED APR. 9. I918.

i ,27 1 5 52 Patented July 9, 1918.

9 SHEETS-SHEET 5- 8. V. EDWARDS.

MACHINE FOR MOLDING PLASTIC MATERIAL INTO BLOCKS 0R BODIES.

APPLICATION FILED-JAN. 4.1915. RENEWED APR.9,1918.

Patented July 9, 1918.

TSSHEET 6.

...... \M M a m \M \z \M M M 6 M m M A w w M i 1 m a \w 6 M \5 w W 5 y l 7/ ms c0 Purim-1.11MB WASHING mN, n c.

B. V. EDWARDS.

JMA HINE FOR MOLDING PLASTIC MATERIAL INTO BLOCKS OR BODIES.

APPLICATlbN FILED. JAN.4|1915- RENEWED APR. 9, l9l8.

Patented July 9, 1918.

9 SHEETS-SHEET 7.

' B. v. EDWARDS.

MACHINE FOR MOLDING PLASTIC MATERIAL INTO BLOCKS OR BODIES.

APPLICATION FILED JAN. 4, 1915. RENEWED APR. 9. 1918.

1 ,27 1 ,552. Patented July 9, 1918.

9 SHEETSSHEEI 8.

5] Ww/wboz $513 fl/btowmas W,

B. V. EDWARDS.

MACHINEFOR MOLDING PLASTIC MATERIAL INTO BLOCKS 0R BODIES.

APPLICATION FILED JAN. 4. 1915. RENEWED APR. 9.1918.

1 ,2? 1,552. Patented July 9, 1918.

9 SHEETSSHEET 9.

' In ven tor:

7'45 NORRIS F'EYERS 1.17.. PWOMLIYHDHIWASNINGYUN, D C.

UTED STATES PAT on-nion.

BRUCE v.. ED WAnns; or nnwnn gjnnwunnsniz, ssIGNO 'T ED ARDS ENGINEERING .AND MANUFAGTUR NGCOMPANY, A" CORPORATION OF NEW JERSEY.

MAcH n non MoLn ner PLAsTIc MATERIAL INTO BLOCKS on BODIES.

Specification of Letters latent.

Patented July 9, 1918.

Application filed January 4, 1915, Serial No. 373. Renewed April 9, 1918. Serial No. 227,599. 1

To all whom it may concern:

Be it known that'I, BRUCE V. EDWARDS, a citizen of the United States, 'residin at Newarlgin the county of Essex and tate of New Jersey, have invented certain new and useful Improvements ,in' Machines for Molding Plastic Material into Blocks or Bodies, of whichthe. followingis a. speci accompanying drawing.

This invention relates to a mechanism for fication, rcferencebeing had therein to'the forming plastic material into blocks .or.

bodies, and has reference more particularly to the molding, of butter into. prints, theaim of the invention being to provide mechanism, SllIlPlG/lll construction and compact in form whlchwill produce prints Oflllllform size, shape and density.

With these ends inqview, my invention consists of the combination and arrangements of parts illustratedv in the accompanying drawings and. described in detail in the accompanying specification, said parts constituting a completerorganized mechanism of novel. -construction,'- embodying a molding or print forming mechanism adapt.- ed toseparate portions 'ofanaterial from a mass of. the; same and form it successively int-o prints or blocks;-;a' feeding/mechanism adaptedto, feed the material to the form ng mechanism; .and an ,.e ect1ngmechanism.

adapted to; act, onthe prints. formed by the forming mechanismand eject the same therefrom. The ejecting mechanism is controlled in its operation by the density of the printin ,course offormation, the control of this mechanism being such, that unless the print is of the proper density, and therefore the proper weight, the ejecting mechanism will not operate to eject the same, and the imperfect; print will be mingled with the mass of material being fed-,to the molding mechanism. r

I propose to operate my improved print. forming mechanism in con unction with a machine for applying wrappers; to the prints, the said wrapping mechanlsm embodying. a-movable member to which the print is. delivered, ,and' by which itis started on its course to havethe wrapper.

applied, and I so combine the print forming mechanism with the wrappernpplymg mechanism, that the latter mechanism will be operated to perform its functions only whenaprint of the proper density is ejected from the print forming mechanism, the result being that, in the event of an imperfectlyformed print being produced, not of the, proper density and weight, the ,wrapping mechanism will be prevented from. operating. I M g In the accompanying }drawings 1' have illustrated my invention in the particular form which I prefer to adopt, and which in practice has been found to answer to a satisfactory degreethe ends to be attained. It will be understood however that the construction is susceptiblepf various changes and :modification s, such as would suggest themselves to those skilled in'the' art; and further it will be understood that the .in vention not -limited. t0:'any -particular form. or construction of the parts ex'cept in so far as such limitations are specifierlrin the claims. I In the accompanying;drawings: 1 Figure l isa side,elevatio 1i,,o'f T ny. improved machine show'ing so much of the, wrapper applying mechanism as isneces', sary to illustrate'the' cooperation-of the print forming machine with said mechanism. 7' f Fig. 2.is an end view of the machine as. viewed in the .di'rectio'n'of, the 'arrowin' -1- 1 Fig. 8 is a sectional elevation throughfthe. feeding mechanism on the line of: Fig-2. j 'lf f Fig. 4 is a top plan view" of thesame. looking down into the feednhopper.

Fig. 5 is a bottom plan view ofthe parts shownin Fig. i. H v Fig; 6 is a vertical sectional elevation on the line 6-43 of Fig. 4. I j

Fig. 7. is a side View of the print forming. mechanism, parts of the same being broken. away to expose the internal construction.

Fig. 8 is a vertical sectional elevation through the same on the line 88 of the preceding figure. p N

Fig. 9. is a perspective view ofone of the prints produced by the forming mechanism. Fig 10 is a sectional view on an enlarged scale of two of the cooperating members of the print forming mechanism. I

Figs. 11 and 12 are perspective views of details of the print forming mechanisms Fig. 13 is avertical sectional elevation on the line 13 13 or Figs. 2 and 7, showing.

the mechanism by which the ejection of the formed print is controlled.

'Fig. 14: is a similar view showing the parts in a different position.

Fig. 15 is a vertical sectional elevation on the line l515 of Figs. 2 and 7, showing the ejecting slide and the means by which it is operated.

Fig. 16 is a horizontal sectional plan View on the line 16-16 of Fig. 15.

Fig. 17 isa transverse vertical section on the line 1717' of Fig. 15.

Fig. 18 is a perspective View of a detail.

Fig. 19 is a planview of the clutch, con-' trolling the operation of the wrapper applying mechanism.

Fig. 20 is an end view of the same with parts broken away.

Fig. 21 is an elevation of the-parts of the wrapper applying mechanism to which the print is delivered by the ejector.

' Fig--22 is a vertical section through the same on the line 22 22 of Fig. 21.

V, Fig. 23 is a perspective view of a detail.

Fig. 24 is an elevation partly in section of 'the mechanism for rotating the forming ring.

Fig. 25 is a diagrammatic plan .view of the operating shafting and gears for the machine.

Fig. 26 is an elevation of the same.

Referring to the drawings:

' My improved machine embodies as its main features a print forming or molding mechanism 1 which acts on the mass of material delivered thereto and forms the same ring 6, and an inner forming member in the form of a disk 7, which members are mounted for rotation between. vertical fixed circular plates Sand 8, sustained by the machine 7 frame and spaced apart so as to constitute a forming chamber, the adjacent faces of the ring and disk being so constructed, that, in their rotation, they will conjointly form suc cessive mold cells, in which the material fed to the forming chamber will be molded into blocks or prints A. Supporting rolls 9 are mounted at intervals between the plates at their peripheral edges, which rolls are arranged at substantially equal distances apart at one sideof the center of the plates. The forming ring is rotatably mounted on these rolls, which give the ring support at one side, andit is maintained in position between the plates, and supported at its other side, by means of two rolls 10 and 11 carried by a frame 12 mounted to swing downwardly, as shown by dotted lines in Fig. 7, for the purpose presently to be described.

The forming ring comprises two annular frames 6 having fixed to their inner edges inwardly extending blocks 6, the faces of which slope outwardly from each other, thereby producing on the interior of the ring, a series of formative cavities or recesses 6, the walls of which are disposed at right "'"angles to each other.

ing fixed to their outer edges a series of blocks 7 the faces of which slopeoutwardlythe outer edge of the disk, formative cavities 7, the walls of which are disposed at right angles to each other; and in the rotation of the ring and disk, the cavities in the respective parts will conjointly form successive mold cells as at 13. The forming disk is mounted loosely on an axle. 14 sit-' uated to one side of the axis of rotation of the forming ring, thereby disposing thedisk eccentrically within the ring, the result being that at one side the edges of the blocks on the ring and disk will move in contact with each other, while at the opposite side they will be separated by a comparatively wide space 15, which from its widest point, gradually narrows in opposite directions toward the point where the mold cells are formed. The material to be molded is fed into this space by mechanism to be more fully described hereinafter, and the disk and ring being rotated in the direction of thearrows in Fig. 7, portions of the ma terial will be separated from the mass, and will be gradually inclosed by and compressed between the opposing cavities, as the walls of'the latter approach each other to form the'mold cells, the greatest degree of compression of the material occurring just as the walls complete their closing movement at the point indicated at B (Fig. 7), from which point the molded material is carried forward in the closed mold cell to the point C, and from this point as the rotation of the parts continues, the walls of the cell will gradually open.

The forming disk is rotatedon the axle by the rotation of the forming ring, the motion of the ring being transmitted to the disk through the engagement of teeth 6 on the ends of the forming blocks 6, re-

cesses 7 in the ends of the forming blocks" 7*, the recesses being greater in length than the teeth, to the end that the escape of the materialfrom the recesses will be permitted as the teeth engage therein.

The axle 14L is removably mounted in openings 14? in bearing plates 14', which The forming disk 7 consists of two circular plates 7 hav-- images-2 plates are removably bolted to the outer sides respectively of the vertical plates 8 and 8 before alluded to, the arrangement being such that the axlemay be withdrawn endwise from the bearing plates and the forming disk, by means of a handle 14 on the the bearing plates, and the latter' are adapted to be removed, and other bearing plates substituted in their place, in order that when occasion arises, a forming disk of different size may be substituted, in the event that it is desired to produce larger or smaller molded prints.- The substituted bearing plates will differ from each other in respect to the distance between the openings therein in which the axle is mounted, and the point therein where the fastening bolts extend through the bearing plates and into the side plates, the radial slots in the latter per-' mitting the axle to occupy the difierent positions relatively to the plates 8 as would be required by'the employment of different bearing plates;

The forming ring is removable from be tween the plates 8 and 8 as before stated, and when in operative'position, it is sup: ported by and travels against the support ing rolls 10 and 11 mounted in the frame 12, as shown in Fig. 7, theremoval of the ring being effected by swingingthe frame downwardly, to the position shown in dotted lines in said figure, which action will move the supporting rolls downwardly and will release the ring. The frame 12' is constructed to serve as a cradle or support, on which the ring, when the frame is swung downwardly,

may be rolled outwardly from between the] plates8 and 8 and temporarily supported. To effect this result, the frame 12 ispivoted on' a horizontal transverse axis 12 near itslower end between depending ears on the plates 8 and 8 the supporting roll 10 being journaled in the upper endof the frame, and the supporting roll '11 being journaled adjacent the pivotal axis of the same. The frame is provided on opposite sides of its pivotal axis, with a flat supporting surface '12 which, when the-frame is" swung downwardly, will form a track or support on'which the ring will be received as. it is removed," and-on which it maybe rolled outwardly'and given temporary sup- ..port on the rolls 10 andll, from which position it maybe finally removedfrom the machine. The frame 12- is held in its upper position to confine and support the ring in operative position, by means of a latch 12 which is PlVO'CGCl to the side of the plate 8 as shownin Fig. 2' so that it-may be swung up and down on its axis, and it isiprovided with a slot 12 adapted to engage over a pin 12 projecting outwardly from the side of the frame 12 at its upper end. hen the ring is to be removed, the latch is disengagedfrom the pin and the frame 12 swung downwardly. The axle 14 supporting theforming disk is withdrawn endwise, and the disk being released, it will be received and supported by the ring, and the latter, together with the disk, may be withdrawn for-- wardly fIOlll bGtVQQD the plates 8 and 8 as previously described.

The feeding mechanismQ before alluded to operates to introduce the material between the'forming rin and forming disk into the space 15, at which point the inner plate 8 is provided with an opening, into which the material is directed by a chute 16 (Figs. 1 to 6) which at its lower end surrounds said opening and leads upwardly, in position toreceive the material from a fixed hopper 17. Between the bottom of the hopper and the upper end of the chute, is arranged mechanism which operates to separate continuously from the lower portion of the mass of material in the hopper, a slice or paring, and to force the same in uniform quantity and continuously downwardly into the chute, whence it passes through the opening in the plate 8 and enters between the forming disk and forming ring. The hopper 17 is detachably mounted over a c ir cular opening in a fixed horizontal plate 18, by means of slotted bracket plates 19 fixed to the hopper at intervals and adapted to be engaged with clamping screws 19 projecting upwardly from the plate 18. The plate 18 is fixed to the top of bracket 20 which is in turn fixed to the vertical plate 8 and the upper end of the chute 16 is detachably connected with the under side of the bracket 20, by means of locking latches 21 (see Fig. 2) pivoted to the bracket and adapted to engage beneath lugs 22 on the chute. jAs a result of this construction, both the hopper and the chute may be removed at will to permit access to the operative parts of the feeding mechanism now to be described.

Mounted in a fixed circular guideway 23 in the bracket '20, isan annular rotatable frame 24 provided on its peripheral edge with gear teeth 24 which are'engaged by a driving pinion 25 on the upper end of an upright shaft 26 mounted in a tubular hear; ing casing 27 fixed to the machine framing, the lower end of the shaft having fixed to it a bevel gear 26'" meshing with a bevel pinion 26 fixed to a horizontal shaft 27. This shaft is mounted in suitable bearings in the frame of the machine, and is driven in a manner 'more fully described hereinafter. Interlocked with and supported by the gear ring 24, so as to rotate therewith, is

a horizontal cutting wheel 28, the upper portion of the rim of which is extended outwardly and upwardly then around the lower edge of the hopper while the lower portion ofsa id rim extends downwardly within the gear ring 24. The interlocking connection of the wheel with the gear ring is in the form of lugs 28 on the wheel (see Figs. 3 and 5), which are engaged in open slots in the upper side of the gear ring, which arrangement permits the wheel to be removed from the ring by lifting the wheel there from. The wheel is provided with a central hub 28, from which extends arms or spokes 28, to which is connected a circular plate 28 extending from the rim to the hub and connected at its edges to said parts. This plate is provided with a radial slot 28*, the opposite walls of which are formed by the adjacent edges 28* and 28 of the plate, which edges are parallel with each other and are curved slightly inwardly, so as to present their concavity to the direction of rotary movement of the wheel, as indicated by the arrow in Fig. 4. The edge 28 stands at a higher level than the edge 28 the plate extending from one edge to the other gradually at a downward inclination, the result being that in the rotation of the wheel at the base of the hopper, a continuous slice or paringwill be severed from the body of material therein as the upper edge 28 of the plate advances through the material, which paring will be of uniform thickness, corresponding to the vertical distance be tween the two edges of the plate. The separation of the slice from the overlying body of material, is effected by an initial cut made therein in advance'of the edge 28, the latter acting to enter into the initial cut and serving to efiect the complete-separation of the slice. This initial cut is effected by means of a cutting wire 29 extending radially between the hub and rim of the Wheel on a level with the edge 28. The-wire is provided at its opposite ends with hooks, which are engaged respectively in holes in the rim and hub of the wheel respectively, and the length of the wire is'such that it will extend slack between its points of support, and will curve back slightly between its ends. As the wheel is rotated in the direction of the arrow, the wire will be forced into the mass of material, and an initial cut will be made therein. The edge 28 following in the path of the wire, will enter the cut and will act toseparate the slice entirely from the mass.

I deem this slack wire for effecting the initial cut of the material, a very important feature of my invention. On account of the tendency of plastic material to adhere to fiat surfaces, it has been found very difiicult and impracticable to force a fiat blade through the same in effecting the separation of a slice therefrom. By theemployment ofa wire or cord in the form and arrangement described, this objection is entirely overcome, as the wire does not present any flat or extended surfaces, and it may consequently be caused to enter the same and ef- 1 feet a clean out without difliculty. By supporting the wire so that it will be slack, it

'with certainty through the opening between the edges of the slot therein.

From the construction described it will be seen that as the wheel rotates, a continuous slice of the material will be separated from the bottom of the mass, and will be directed downwardly into the upper end of the chute, which at its outer side extends horizontally beneath the wheel in the form of a flat surface 16*, and from the chute, the material will be advanced through the opening in the vertical plate 8 of the forming chamber, and into the space between the forming ring and disk.

A scraper plate 28 is fixedto' the under side of the plate 28 adjacent the edge 28 and extends downwardly at an inclination therefrom with its lower edge terminating at such point, that'it will sweep over the fiat surface 16 of the chute as the wheel rotates, and will thus serve to keep said surface free and cause the material to advance toward the forming mechanism.

The forming disk and ring are rotated or advanced step by step, there being a pause between each forward movement, at which time the ejector mechanism acts to discharge the print, as will be more fully described hereinafter. be thus moved, and in order that they will be held against displacement during the pause between the movements, I provide the form of driving mechanism for the forming ring shown more particularly in Figs. 1, 2 and 7. This mechanism consists of a rotary arm 29 fixed to the end of a horizontal rotary shaft 30 mounted in suitable bear ings in the frame of the machine, and driven continuously from a main driving shaft 31, mounted in suitable hearings in the frame of the machine, and having fixed to it a worm 32, engaging a worm wheel 33 on the shaft 30-, the said shaft being provided with a sprocket wheel 31 driven from any suitable source of power. The arm extends radially outward from the periphery of a circular hub or disk 29*- on the shaft, and it is extended at its outer end rearwardly as at In order that the parts may,

29*,which. extended end is curved in the arc of a circlestriick from the aiiis of rotation of the armnas a center; Thesaidv disk is provided with a cam surface 29having. a cavity 29 located just in advance of thega'rm. In

- the forming ring, in the form of I'Oll34g, and

I so

.cam. 29f inthe ,cam will, be brought beneath the by such engagement, the ring. is advanced step by step, a, distance: equal tolthe distance between the centersof therolls, this movement of the ring being-transmittedto the :inclosed forming disk through. the

medium ofithe-ldriving teeth- 6? and slots 7 before described. The relation I of the driving arnr-and cam; surface .to the. driving rolls onthe forming ring is..such,,that the camwill intersect the. circular path. of move- .ment ofthe, rolls, so gthat duringthe time that the arm, after disengaging from one roll, is passingaround toengage .the next, the ring'will be preventedflfrom advancing by the engagement of the latter roll with the As the arm engages the roll, the cavity roll, and as the movement of the arm continues, the roll;will be pushed before it, seats ed in the cavity. -As the path of movement of the roll separatesfromthescanifin the continued rotation ,ofthe parts the arm will maintain contact with the roll,- and thefring will be advanced untilthe'r earwardly curved portion of the arm engagesthe. roll, whereupon and by-reason of thearcuate'curvature of the arm, it will ceaseto. advance the ring farther, and the latter will come to rest. At this moment 'the' next roll, which 'inthe meantime had been moving forward, will contact with the cam, asfshown in" Fig. 24:,

so that the ring will be held, by thismeans against forward movement, At the same time the ring will be held also against retrograde movement, by the arm, during the time that the, arcuate portion of the same is moving past the forward roll. The driving arm willact therefore in its successive rotations, to advance the formin'gl ring and forming disk step by step, the said'parts' coming to rest between said advancingmovements,

and being held against movement, in either direction at the first part of the period 'of pause, and being held against retrograde movement during the remainder of said periodof pause. j

Referring now to the means for testing the print to determine if it is of the proper density, and to the means for ejecting the print from the formingmechanism, attention is directed particularly to F igs. 1, 2, 3 and 18 to 18 inclusive. The test for density is made .at the point in the revolution of the forming ring and disk, where the material to form theprint is subjected to the greatest pressure, this being at the point indicated by theletter B in Fig. 7 where it inclosed materiah y print, if'it is found by the test to be of the proper density, is effected at an advanced at thepoint C, the said testingimemberlbe will be seen that the opposing cavities in the ringand disk are aboutto close on the The discharge of the point in the revolution of the forming members,'a nd after the print formed in thejfcell atBhas been carried forward to th'epoint represented, by the letter C. The mechanism. for accomplishing these results, comprises a yielding testing member forming a portion'of one of the end walls 'of the cell at the point B, and an ejecting member which is movable endwise through the cell ingr formed to yield only in the event that the print in the cell at Bis of the proper density, and, the said parts being so cooperatively related, that the ejecting member willnbe permitted to act to form its ejecting function, only in the event that'the testing member, yields. As, a result, if the printisnot compressed to the proper density and is therefore not of the proper weight, will not bedischarged from the, .Iforming mechanism, but will be carried be- -yondfthe point of discharge and mingled with the, mass; of material being fed between the forming members by the feeding chute. The yielding testing member is. in. the form of a cylindricalplunger 35 which is moimted to slide in a circular opening formedin the plate 8 of the forming mechanism at the point therein where the material is subjected to the greatest pressure, this being at the point inclicatedby'the letter The inner face 35 of the plunger constitutes'a portion of one of the end walls ofthe cell'formed at that point, and is therefore subj e'c t to the pressure of the material thereinfj The eject- Fig. '15) 'which is movable horijzontally in .a fixed horizontal guiding frame 37 sustained by'the-plate 8 and projecting out wardly therefrom. j The slide is adapted to move through openings 37 and 38lformed respect-ively in the plates '8 and 8 at the point therein where, in the revolution of the forming ring anddisk, thecell is'presented at C. The slideis provided witha' vertical ing member: is the form of'a slide. 86"(see active ejecting lface: 36 which exactly fits the cell, and which in the ejecting action slides through the openings 37 and '38 and the intermediate cell, which, for 'the time being, is in registry with said openings. vertical face of the slide, when the latter is in normal retracted. positon, forms one end wall of the cell, the other end wall being formedbymeans of a vertical plate 39 (see Fig. 22) which is movablevertically.insuitable guides 40 on the outer side of the plate 8 jThe plate39 when in its upperposition, closes over, the opening 37 in theZplate'S,

and when in its lower position it uncovers said opening. The plate 39 carries on upper end, a horizontal outwardly projecting guiding chamber 41' correspond ng in cross-sectional form to the cross-section of the cell, which chamber, when the plate is lowered to uncover the opening, will be moved into registry with the opening, and will receive the print discharged by the 'ejecting slide. The plate is operated in such manner, as will be more fully described later on, that when the ejecting slide is advanced to eject the print, the plate will be moved downand will uncover the opening 37, there- 'by bringing the guiding chamber in position to receive'the discharged print.

The ejecting slide 36 is of inverted U- .shape in cross-section, and is provided on its lower side with inwardly extending longitudinal ledges 36* provided with opposing notches 36- therein. These notches are adapted to receive a cross-head 42 0n one end of a dog 42 pivoted between 1ts ends at 42 on a horizontal axis to the upper end of an operating arm 43. The arm 43 is pivoted at its lower end as at 43 to the frameof the machine, so that it may be vibrated back and forth in the direction of movement of the ejectin slide. When the head on dog 42"? is engage in the notches 36 in the ejecting slide, the latter will be carried back and forth with the operating arm, and the sl1de will be caused to pass through the cell'of the forming mechanism, and will act to discharge the print from said cell. i If, however, the cross-head is not permitted to enter the notches, the operating arm will be vibrated idly back and forth without imparting motion to the ejecting slide, theendsof the cross-head, in these idle movements of the arm, being supported and sliding on the ledges 36 The dog 42 is heldno'rmally with its cross-head above and disengaged from the notches, by means of a horizontal transverse latch 44 mounted to slide endwiseto a limited extent in a guideway 45 fixed -to the bottom of the guiding frame 37, in

rear of the notches 36. This latch is of the form shown in Fig. 18, being provided in its edge 44 with a notch 44 ,.and-being provided below said notch, and to one side of it, with a depending lug 44 Normally the latch is in such position in its guideway,

that the notch will be'out of the path of movement of the outerend 42 of dog 42, the latch being held yieldingly in this position by m'eans'of a spring 44 fixed at its ends respectively to the latch and guiding frame 36. The relation of the edge ofthe latch "to the end of the. dogis such, that, as the dog is carried by the outward movement of the voperating arm toward the latch, with the cross-head 42 resting on and supported by the ledges 36", the end of the dog will come up against the. edge of the latch at the moment that the cross-head arrives "at the notches '36, the result being that the dog will axis'as at 48*. is actedon by a spiral spring 50,which f seats against an ad usting screw 51 screwed .be held in its a position by the edge of the latch, and the cross-head will be prevented from entering in the notches. By the endwise movement of the latch, however, the notch 44 therein will bebrought into line with the path of movement of the end'of the dog, and when the notch occupies this position, theend of the dog'will befree to move vertically therein, when the operating arm reaches the limit-of its outward movement, and the cross-head on the dog will be free to drop down into the notches in the ejecting slide, thereby forming a drivingconnection between the operating arm and slide. The latch 44 is controlled in its movements to time effect driving connection betweentheoperating arm and ejecting slide,

by the testing plunger, through the medium of intermediate mechanism now to be described. Bearing against the end of the testing plunger is a hoiizontalpin 47 carried by the upper end of a lever 48 pivoted at its lower end to the frame on a horizontal transverse The upper end of this lever intothe upper end of a bracket arm 52 extending upwardly from the frame, the tendency of this spring being to urge the testing plunger horizontally inwardly, but permitting itto yield outwardly. The plunger is limited'in its inward movement by means of] an annular outwardly projecting shoulupper end of lever 48,'is a pin48 provided jwith a pointed end, adapted to seat in a notch 53 in a 'dog 53 pivoted at its upper end to the frameon a horizontal transverse as at 3?, whence it extends downwardl'y and outwardly at an lnclination and 1s providedon its lower end with a lateral lip 53, ,thendtch 53'bein'g situated adjacent id axis. Adjoining the notch, is a.

curved ledge or shoulder 5,3 which projects laterally from the arm and which extends the arc of a circle struck from the axis 48 of lever 48 as a center.

v Normally, when the testing plunger is at the inward limit of its motion, the pointed end of the pin will beseated in the notch 53, and the dog will be sustained by said pin in its lower- IIIOStpDSl'GlOIl, as shown in Fig. 13. lVhe-n,

however, the testing plunger yields o-utwardly, arm 48 will be rocked outwardly against the force offspring 5 0, and the end .of pin 48 will be forced out of the notch '53 and Wlll pass onto the curved ledge 53,

' position and afterf it'ha's operated l'a'tcl144 which action will slightly lift the dog on its axis and cause it to occupy its uppermost position as shown in Fig; 14. Thedog when in an elevated position, is adapted to cooperate with the vibratory operatingarm 43, when the latter reaches the limit of its inward motion, in such manner as to cause said arm, on its outward movement, 'to effect connection with the ejecting 'slide,'the result beingthat the slide; will "be advanced to perform its ejecting function when the operating arm again moves inwardly. V Thisaction of the parts is effected by means'of a finger 54 pivoted to the side of the operating arm on a. horizontal transverse axis as at 54 and provided with avertical depending fixed pin 54' adapted-to "seat on a lug 54 fixed to. the'operatingarm,'jand by which the; downward 'move'ment of the finger is limited,- and itsflowermost position deterfingeris provided on its upper-edge with a sloping surface 54", on its lower edge -with a sloping surface 54, and ,on'iits inner face .W'ithan inclined surface,;54 .jThis latte-rsurface. is adapted-when the finger; is in raised positionnas showniin Fig; 14,,to engage the'sideof the lug 44 'on theflatch 44 when the' operating arm reaches the limit of its'outward movementfby which action the latch will be'shifted' to a positionwhere Qthenotch' 44 ther'eiir will; be in line with the path of movement o-f theend of dog 42, "so that "the cross-head on: dog annbe permitted to engage ;in' the notches in the ejecting. slide and effect driving connection. between the 'arm and slide. The lower slop ingfsurface,54 on finger 154 is adapted,- when the operating 'armfifeaches' the limit ofits inward movement; to en a e with the lateral 11p 53jon the lower end of dogffng' when said dog isin its, elevated position, as shown in; Fig; 14, with the result thatthe'ffinger 'will be rocked on 'its axis-to its raised position, in which position'itiwill cooperate with the latch 44 'asfj ust 'cl slibe cl fillie ii by tl' 'e movement of the; p'erat1ngarm'43,'it reaches the limit of its outward "1no-veineiit-- In;- clined surface 54 the upper edgeof fi ger -54 adaptechwhen the is inraised and isoniits return moveinentf'iirwardlml to engage a, pawl 55', pivoted-alt its upper' end as at 55 to'theside of the guide frame 37, and extending at its lower end in the path ment inwardly by a? stop lug 55" fixed lothe guiding-frame and will, when-held, serve to rock the finger downwardly as described, but'being permitted to yield in the opposite direction, the finger when iii-raised position," may pass the pawl without its position' beingdisturbed, whentl'rewfinger is car'- r1ed bythe operatmg'arm outwardly toward the latch.

It will be rememberedthat the position of dog controlled by the movement of the testing plunger, the -'outward mmxemcnt of the plungeracting to raise the dog, and its inward movement permitting the dog to-descend to its lowermost in'a'ctiveposition. "It will be understood therefore that in the op eration of the mechanism described, if the dog *is in its lowermost position, finger 54, when it is carried inwardlyby the operating arm, willnot engage the dog, and the finger will remain in its lowermost position. Consequentlyion'the'outward movement of the operating arm toward the latch, the finger will not] engage -the"lug 44 thereon, and therefore the latch will remainin position 'to prevent dog 42 from effecting-connection between the operating arm and BJQCtOI slide. As a result, the operating armwill vibrate back and forth idly without having any effeet 'on'theejector slide. If, however, the testing plunger ismoved outward'ly to the position shown in Fig.-14, it will act'toraise dog 53*, thereby moving the lip on its lower end in the path ofthelowersurface 54 on fingerhet. As the fingeris now carrled by the operating arm inwardly, and reaches the limit of its inward movement, the finger engaging said 11p, will ber'ocked'toits uppermost position, where it will be held by the friction spring before alluded to. In this raised position, the finger will be carried outwardly by the retiIrn mOV-ement off the operat1ng-arm,;and the surface 54 -on the s de of the finger, engaging lug 44011 latch 44,,will shift thedatterendwise and carry the notch 44 therein in the path of movement of'the end 42 of dog 42 the result being that the cross-head on the dog will be permitted to drop' into the notches in the e ector slide, thereby'effect'mg'a drivmg connection between the operatingfarm and slide. lVhenjno'w the operating arm again moves inwardly. it will carry the connected ejector slide with it',"and the latter'will be thrust through the cell betweenfthe' forming; disk andforming ring at the point C, and the print will be ejected from said cell. As the oporat- "ing arm moved inwardly with the connected ejector slide, the upper *surface 54 on finger 54 was earned mto engagement with pawl and the finger was restored to its lowermost position. On the outward movement of the operating arm, after the ejector slide has been thrust through the cell to perform its ejecting function,th'e slide will be withdrawn and carried back to its former retractedposition, the latch 44 in the meantime having been shifted endwise by its returning spring, and restored to its former position, with thenotch 44* therein out of the path of movement of the end of dog 42?. When now the operating arm reaches .the limit, of its outward movement, the end 42 of the dog will engage the edge of the latch, and the dog will be positively rocked upwardly and its cross-head raised out of the notches in the ejector slide whereby the ejecting slide will be disconnected from the operating arm. When the operatingarm moves inwardly again, the cross head on dog 42 will move idly on the ledges of the ejecting'slide, and if the testing plunger has been moved outwardly, finger54 will be set as before, in position to operate latch 44 and cause connection to be made with the ejector slide. But if the testing plunger has not been moved outwardly, then the fingerwill'not be set, so that no connection will be made with the ejecting slide, and the latter will remain in its retracted position. It will be seen therefore that if the butter in the test ing cell is of the proper density, resulting in the outward movement of the testing plunger, the ejecting slide will be operated to eject the print, after it has been advanced by the forming members,to the position where it can be acted on by theejector slide. But if the print is not condensed to the proper degree, the testing plunger will remain in its inner position, and the ejecting slide will not be operated, the result' being that the imperfect print will be carried forward, in the rotation of the forming members, and will be mingled with the material being fed to the said members.

The degree of density to which the print is compressed inthe forming cell at the point B, is controlled by the spring 74, the tension of which may be adjusted by the screw 75. By this means the testing-plunger may be setso as not to yield until a predetermined degree of compression in the forming cell has been reached, the result being that the print will not be discharged by the ejector slide if it has not been compressed to such desired predetermined density. After the testing plunger 35 has been moved outwardly as described, by the pressure to which the butter is subjected in the mold cell, it is necessary that the plunger be returned to its former position flush with the end of the cell, otherwise the pressure of the butter in the succeeding cell as the latter is presented at the point whereithe plunger is located, would preventthe returnof the plunger, and consequently the proper operation of the mechanismwould be interfered with. I provide. for the return of the plunger by the inward movement of the operating arm 43, through the medium of. a pro ection 43" extending upwardly from said arm in position toengage a roller 43 on the upper end of the lever 48, the result of such'engagement being tothrust the plunger 35 inwardly as the op'eratingarm completes its inward movement. This action does not interfere with the operation of finger 54 by the dog 53? as heretofore described, because with the same radius asthat of the path of 1 movement ofthe end of pin 48, as described,

the degree of upward movement of the dog by the pin, when the testing plunger moves outwardly, will be the same without regard to the extent of movementof the plunger, consequently the dog will be raised to the same definite predetermined position whether the plungerryiel'ds to a slight extent, or whether it moves toa greater extent.

As a result, the location of the lip on the dog in the-path 'of movement of the lower inclined surface on the finger 54, will be assured. i

The operating arm 43 is moved..inwardly cam 56 fixed to the shaft 27, before alluded to, which cam is engaged by. oppositely, arranged rollers 43 and 43 journaled on the side of the operating arm 43, the form, ar rangement and relation ,of the parts being I such that the operating arm will pause at the limit of its outward movement; The

back and forth movementsof the operating arm are so timed, in relation to the stepby step advancing movement of the forming ring and disk, that the operating arm will advance and return at each period of rest or. pause between the. successive advancing movements of the forming members, the adand outwardly by means of a three-sided v vancing movements of the latter occurring duringthe'pause of the operating arm at the limit of its outward movement. By reason of this action of the parts, the print is tested as to its density at one point in-the revolution of the forming members, and is ejected, V

ifof the proper density, at another point inthe revolution of' said members in advance of that where" the test takes place. The operating arm moves ;back and forth continuouslyand uninterruptedly, but the ejectingslide ismoved to perform its ejecting action only when the print in the cell atthe point B in the revolution of the formin-g members,.hasbeen; condensed to the proper degree and moves the testing plunger outwardly. At other times, and if the print does not possess the proper density, the ejecting slide is left at rest, and the operating arm will move idly back and forth,

The effect of the mechanism described, is, if the print is compressed to the proper degree of density, to automatically set certain parts, on the inward movement of the operating arm, which parts will, when the operating arm moves outwardly, cause the arm to be automatically connected with the ejecting slide, so that when the arm makes its next movement inwardly, the ejecting slide will be carried with it and will act to eject the formed print, which in the meantime has been moved to an advanced position from the point B in the revolution of the forming members, to the point C. If the print is not of the proper density, these parts will not be set, and they will therefore fail to effect a connection between the operating arm and ejecting slide, with the result that the slide will not be operated and the print which in the meantime has been moved to the advanced position, will not be discharged, but will, as the forming members continue their step by step advance, cause the print to be mingled with the mass of material entering the forming chamber from the feeding chute.

It will be remembered that the print discharged from the forming mechanism by the ejecting slide is received in the guiding chamber 41 carried by vertical plate 89 (Fig. which chamber at the time of action of the slide is moved downwardly and brought in registration with the opening in plate 8, such movement of the chamber causing the vertical plate 39 to also move down and uncover said opening. These parts are moved in the manner mentioned, only when the operating arm 48 actuates the ejector slide, manifestly it being necessary, if the print in the cell opposite the ejector slide is not of the proper density, and therefore not to be discharged, that the plate 39 remain in its upper position closed over the end of said cell. Therefore I have provided mechanism for controlling the movements of plate 39, which m chanism is of such. form that the plate will be moved downwardly to permit the discharge of the print, only in the event that the ejector slide becomes active to perform its ejecting function. I prefer to effect this control of the plate in the following manner: The plate receives its motion from the main driving shaft 31 through the medium of shaft 27, before alluded to, which receives its motion from the driving shaft by means of a bevel gar- 57 fixed to the worm wheel 33, before alluded to, and meshing with a bevel gear 58 on shaft 27. A sprocket wheel 59 is connected to the end of shaft 27 by means of a clutch mechanism 60, shown more particularly in Figs. 1, 2, 19 and 20, and a sprocket chain 61 passes over sprocket wheel 60 and over a sprocket wheel 62 mounted on a shaft 63 journaled in suitable bearings in the base of the main frame. Shaft 63 carries a second sprocket wheel 64: from which a chain 65 passes upwardly and drives a sprocket wheel 66 mounted on a horizontal shaft 67 journaled in bearings on the main frame adjacent the outer side of plate 8. Shaft 67 has fixed to it a worm 68 engaging a worm wheel 69 fixed on a hori zontal shaft 7 0 mounted in suitable hearings on the main frame, and extending above and at right angles to shaft 67. A cam 71 is fixed to shaft and is engaged by a roller 72 on the lower arm 73 of a two-arm lever 74% which is pivoted as at 74 to the machine frame on a horizontal axis. The upper arm 743 of this lever is pivoted as at 74 to the upper end of a link 75, the lower end of which is pivoted as at 75 to the upper side of the guiding chamber 41. A spring 76 is connected respectively with the arm 7 4 and the machine frame, and pulls up on the arm, thereby holding the roller 72 in yielding engagement with cam 71. The cam is so shaped that in its rotation, it will positively lower plate 39 from in front of the opening through which the ejector plunger acts, and will hold the plate in its lower position a suflicient length of time to permit the ejecting slide to advance through the cell in discharging the print therefrom, and return to its former position, the plate after the retreat of the slide, being positively raised to its former position by means of a cam 7% carried by shaft 70 and adapted to engage a lever 7 1 pivoted at its upper end on a horizontal transverse axis 7 L to the side of plate 8. The lever extends at its lower end adjacent the side of arm 74 to which it connected by means of a pin 74 on the side of the arm, engaging loosely in a vertical slot in the lever. The form of the cam and its timing in relation to the lever and cam 71 is such that when the arm 74 is in its lower position, with the plate 39 in its depressed position, the end of cam 74 will be free of a segmental surface 7a on the lever 74?, and as the cams rotate in the direction of the arrow in Fig.2l, cam 74 will engage the end of said segmental surface and will act to swing the lever 74* to the right, which action will positively raise arm 7 4* to its upper position. While this action is taking place, a drop surface 71 in cam 71 is presented. to the roller 79., whereby the upward movement of the arm in the manner described is permitted. It will be' noted that the segmental surface 74 on lever 74 corresponds in curvature to the radius of the cam, and when the cam has acted to raise the arm 7 4- as described, the surface of the'cam will'be in engagement with said segmental surface on the lever, whereby the arm will, for the time being, be locked in raised position.

The clutch mechanism 60 (see Figs. 19 and 20) before alluded to as connecting sprocket wheel 59 with shaft 27, is adapted to be controlled in its action by the latch 44, which in turn, as has been before descrlbed, coeperateswith certain parts in controlling the operation of the ejector slide bythe operating arm 48. The clutch is controlled by the latch in such manner that the sprocket wheel 59 will not be connected with its shaft and driven thereby, unless the latch has beenshifted to cause the operating arm to make connection with the ejector slide, the-result being that plate 39 and guiding chamber 4L1 will not be lowered, unless the ejecting slide is to be operated-t0 discharge the print. The means by which the mechanism is in this manner controlled, consists of the following parts: Onreference to Figs. 19 and 20, it will be seen that the sprocket wheel 59 is mounted loosely on the end'of shaft 27 and is providedonits inner face with a recess 59 Splined to the shaft alongside the sprocket wheel, is'a collar 77 capable of sufficient motion longitudinally of the shaft to engage a tooth 77 on the collar in the recess in the wheel, and thus efi'ect driving-connection between the collar and the wheel, or to disengage the same therefrom so as to disconnect the wheel. The'collar is rotated constantly with shaft 27, and is provided with a peripheral groove 77 in which loosely engages a shoe 77 depending from the under side of a horizontally movable plate 78 mounted at one corner on a vertical pivot 7 8" sustained by the frame of the machine. The plate is acted on by a spring 78 fixed to the frame and plate respectively, and tending to shift the plate in a direction to cause the engagement of tooth 77 in recess 59 of the wheel. A vertical dog 79 is pivoted at one end to the end of plate 78 on a horizontal axis 79 so thatthe dog may rock upwardly and downwardly. When in its lower position as shown in Fig. 19, the dog extends along the inner side of a sloping cam surface 59 on the inner face ofthe sprocket wheel 59, the dog when in this position, maintaining the tooth 77 onthe driving collar out of engagement with the recess in the wheel, whereby driving connection between the collar and wheel will be interrupted. When the dog 79 is raisedhowever to its upper position, it will disengage from the cam surface 59 and'spring 78 "will shift plate 78 on its axis and thereby shift collar 77 endwise and'cause the tooth thereon to enter the recess in thesprocket wheel, and thus effect driving connection between the shaft 27 and the sprocket wheel. The movement of dog 7 9 to thus control the driving connection between the shaft and sprocket wheel is controlled by the latch 4:4 through the -medium of an elbow lever 80 which lever is pivoted on a horizontal transverse axis to the operating arm as at 80*. The lower arm of the lever is provided with a horizontal pin 80 which is adapted, when the operating arm reaches the limit of its outward movement, to engage loosely in an open horizontal slot 7 9 in dog 79. Normally, with the clutch disengaged and the latch 44 in its forward position, with the dog 4% held out of engagement with the ejector slide, upper arm 80 of the lever 80 will stand in advance of the forward edge of the latch but out of the path of the same. When now the latch is shifted endwise to the position shown in Fig. 16, to effect connection be-' tween the operating arm 4L3 and the ejector slide, the'end-of the latch will be projected in the path of arm 80 and as the operating arm 43 reaches the limit of its outward movement, the arm 80 will be brought into engagement with the edge'of latch 4A and the lever 80 will be rocked on its axis, which action will raisepin 80 and lift, dog 79, thereby disengaging the-same from the cam surface on the sprocket wheel, whereupon spring 78 will rock plate 7 Son its axis and move the driving sleeve 77 endwise and engage its tooth 7 7 in the sprocket wheel. Plate 39' and chamber 41 will now be lowered by the driving connection between sprocket wheel 59 and cam 71. The sprocket wheel will make a complete revolution and will then automatically come to rest, which action is eifected by means ofthe sloping cam 59 on said wheel, moving into engagementwith the side of dog 79 and acting by such engagement to rock plate 78 and disengage the tooth on the driving collar from the notch in the sprocket wheel, the said arm 80 in the meantime being disengaged from the end of the latch by the inward movement of the operating arm 43, thereby permitting dog 79 to be lowered to its former position in the path of the sloping cam on the sprocket wheel, and the latch being returned to its former position, by spring li During the period of the connection of the clutch, that is while the sprocket wheel 59 is making a complete revolution, cam 71 will also make a complete revolution, and by this" action the plate 39 andchamber 41, on being lowered, will be returned to their upper position and the plate will again close over the opening 37. It is seen therefore that the plate and chamber are moved downwardly to permit the discharge of the print by the'ejector slide, only when connection is made between the operating arm 43 and the ejector slide, the plate and chamber remaining at all other a in the notch times in their upper position, with the plate closed over the opening 37 The print. discharged by the ejector slide is pushed by the latter through the guiding chamber 41 and over a receiving platform 81 forming a part of a wrapping mechanism for applying wrappers to the prints, which platform is in the form of two separable horizontal sections 81 and on which is placed a sheet of paper 82 to form the wrapper. WVhen the print arrives over the platform, it moves downwardly seated on the wrapper and supported by a table 84, sections 81 of the platform in the meantime having been withdrawn to permit this ac" tion. As the downward movement continues, the print is carried between vertical walls 85 which serve to fold the Wrapper inwardly and upwardly at the sides of the print. From this point on, the wrapper is subjected to other folding actions to complete the wrapping operation, by mechanism not shown as it forms no part of the present invention. As the print descends] in the manner described, it is separated at its end from the end of the ejecting slide, by means of a vertically moving stripping knife 86 so actuated that its descent along the face of the slide will be simultaneous with the descent of the print. This knife is carried by a slide 86 movable vertically in suitable guides 86 fixed to the machine frame, and the slide is connected by means of a link 87 to the free end of a horizontal operating lever 88 pivoted at its opposite end to the frame of the'machine' on a horizontal axis as at 88. The lever has journaled on its side a roller 88 which engages a cam 89 on the shaft 70, which roller is maintained in constant engagement with the cam by means of a spring 90 connected at its upper end to the frame of the machine and at its lower end to the slide 86. As a result of the construction described, in therotation of the cam, the knife will be positively moved downwardly to perform its stripping action, and will be restored to its upper normal position by the spring.

The operating mechanism of the wrapping machine receives its motion from the shaft 63 which in turn is driven by the clutchcontrolled sprocket wheel 59, and inasmuch as the connection of the clutch is effected by the operation of parts which in turn control the connection of the ejecting slide with the operating arm 43, the wrapping mechanism will remain out of action until the ejecting slide becomes active to perform its function. Therefore, if a print is not compressed to the proper density and is not to be discharged from the forming mechanism, the wrapping mechanism will remain inactive.

It will be understood thatwhen the forming disks are changed as heretofore described, in order to provide for the production of prints of different size, a change will be required in the size of the guiding chamber 41 through which the print is discharged by the ejecting slide, it being desirable that this guiding chamber correspond in cross-sectional form and area to the size of the mold cell in which the prints are formed.

Having thus described my invention, what I claim is:

1. In a machine of the type described, the combination of an outer forming member, and an inner forming member rotatable within the outer member, said members having their adjacent faces constructed to conjointly form mold cells in their rotation, means for rotatin one of said members, and means whereby the driven member imparts its motion to the other member.

2. In a machine of the type described, the combination of an outer rotary member provided on its inner face with formative cavities, an inner rotary member mounted eccentrically within the outer member and provided in its outer face with formative cavities, said cavities adapted in the rotation of said members to conjointly form mold cells, the portions of said members between the cavities being adapted to engage each other to effect a driving connection between the members, and means for rotating one of said members.

3. In a machine of the type described, the combination of an outer rotary member provided on its inner face with formative cavities, an inner rotary member mounted eccentrically within the outer member and provided in its outer face with formative cavities, said cavities adapted in the rotation of said members to conjointly form mold cells, the portions of said members between the cavities being adapted to engage each other to effect a driving connection between the members, and means for rotating said outer member. v 4. In a machine of the type described, the combination of an outer rotary forming member provided with inwardly extending blocks constituting cavities in the inner face of said member, an inner rotary forming member mounted within the outer member and provided with outwardly extending blocks constituting cavities in the outer face of said member, the adjacent ends of said blocks on the respective members adapted .to engage each other with a driving action to drive one member from the other, and means for rotating one of members.

In a machine of the type described, the combination of an outer rotary forming member provided with inwardly extending blocks constituting cavities in the face of said member, an inner rotary forming member mounted within the outer member and provided with outwardly extending blocks 

